A.時(shí)間短,觸頭燒損很重 B.時(shí)間短,觸頭燒損較輕 C.時(shí)間長(zhǎng),觸頭燒損較輕 D.時(shí)間長(zhǎng),觸頭燒損較重
A.絕緣油 B.變壓器油 C.空氣 D.壓力
A.1/100 B.1/99 C.99倍 D.100倍